package com.ysxsoft.common_base.utils;

import android.app.Activity;
import android.app.ActivityManager;
import android.content.Context;

import java.util.Stack;

/**
 * Created by Administrator on 2017/9/14.
 * 管理Activity
 * {@link #getAppManager()}    					                							获取Actvitiy管理工具
 * {@link #addActivity(Activity activity)}    												添加Actvitiy到任务栈
 * {@link #currentActivity()}    															获取栈顶端Activity
 * {@link #finishActivity()}    															结束当前Activity
 * {@link #finishActivity(Activity activity)}    											结束指定的Activity
 * {@link #removeActivity(Activity activity)}    											移除Activity
 * {@link #finishActivity(Class<?> c)}    													根据类名结束指定的Activity
 * {@link #finishAllActivity()}    															结束所有Activity
 * {@link #appExit(Context context)}    													退出应用程序
 */

public class AppManager {
	private static Stack<Activity> activityStack;
	private static AppManager instance;

	private AppManager() {
	}

	/**
	 * 单一实例
	 */
	public static AppManager getAppManager() {
		if (instance == null) {
			instance = new AppManager();
		}
		return instance;
	}

	/**
	 * 添加Activity到堆栈
	 */
	public void addActivity(Activity activity) {
		if (activityStack == null) {
			activityStack = new Stack<Activity>();
		}
		activityStack.add(activity);
	}

	/**
	 * 获取当前Activity（堆栈中最后一个压入的）
	 */
	public Activity currentActivity() {

		Activity activity = activityStack.lastElement();
		return activity;
	}

	/**
	 * 结束当前Activity（堆栈中最后一个压入的）
	 */
	public void finishActivity() {
		if(activityStack==null){
			return;
		}
		Activity activity = activityStack.lastElement();
		finishActivity(activity);
	}

	/**
	 * 结束指定的Activity
	 */
	public void finishActivity(Activity activity) {
		if(activityStack==null){
			return;
		}
		if (activity != null) {
			activityStack.remove(activity);
			activity.finish();
			activity = null;
		}
	}

	/**
	 * 结束指定的Activity
	 */
	public void removeActivity(Activity activity) {
		if(activityStack==null){
			return;
		}
		if (activity != null) {
			activityStack.remove(activity);
			activity=null;
		}
	}

	/**
	 * 结束指定类名的Activity
	 */
	public void finishActivity(Class<?> cls) {
		for (Activity activity : activityStack) {
			if (activity.getClass().equals(cls)) {
				finishActivity(activity);
			}
		}
	}

	/**
	 * 结束指定类名的Activity
	 */
	public void finishActivity2(Class<?> cls) {
		for (int i = 0; i < activityStack.size(); i++) {
			if (activityStack.get(i).getClass().equals(cls)) {
				finishActivity(activityStack.get(i));
			}
		}
	}

	/**
	 * 结束所有Activity
	 */
	public void finishAllActivity() {
		if(activityStack==null){
			return;
		}
		for (int i = 0, size = activityStack.size(); i < size; i++) {
			if (null != activityStack.get(i)) {
				activityStack.get(i).finish();
			}
		}
		activityStack.clear();
	}

	/**
	 * 退出应用程序
	 */
	@SuppressWarnings("deprecation")
	public void appExit(Context context) {
		try {
			finishAllActivity();
			ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
			activityManager.restartPackage(context.getPackageName());
			System.exit(0);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}
